CN212404043U

CN212404043U - Coal mine underground gas purification device

Info

Publication number: CN212404043U
Application number: CN202020752943.0U
Authority: CN
Inventors: 王胡军
Original assignee: Sichuan Keyuan Coal Mine Gas Coalbed Methane Engineering Research Center Co ltd
Current assignee: Sichuan Keyuan Coal Mine Gas Coalbed Methane Engineering Research Center Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-01-26
Anticipated expiration: 2030-05-09

Abstract

The utility model discloses an underground gas purification device in a coal mine, which relates to the technical field of gas purification. The utility model comprises an absorption bucket and a precipitation box, two opposite sides of the inner wall of the absorption bucket are fixed with staggered and spaced baffles, the top of the absorption bucket is fixed with an air pump, and the air pump of the air pump extends into the inner bottom of the absorption bucket ; One side of the precipitation box is connected with a transfer pump, the inflow pipe of the transfer pump extends into the inner bottom of the absorption barrel, the top of the precipitation box is fixed with an exhaust pump and a return pump, and the intake pipe of the exhaust pump and the inflow pipe of the return pump extend respectively. Into the inner top and inner bottom of the precipitation tank, one side of the return pump is communicated with the inner top of the absorption barrel through a return pipe, and the return pipe is provided with a valve. The utility model absorbs the gas in the downhole air through the organic solution, and after the absorption reaches saturation, the absorption medium is drawn into the precipitation box, and the gas is re-precipitated by reducing the pressure to realize the gas purification in the downhole gas.

Description

Coal mine underground gas purification device

Technical Field

The utility model belongs to the technical field of the gas purifies, especially relate to a colliery is gas purifier in pit.

Background

The gas is formed by decomposing cellulose and organic matters under the action of anaerobic bacteria at the initial stage of stacking ancient plants into coal. In the environment of high temperature and high pressure, the coal is formed and simultaneously the coal is physically neutralizedAnd (4) continuing to generate gas through chemical action. The relative density of gas to air was 0.554, and the density of gas was 0.716kg/m under the standard condition³The gas has the permeability 1.6 times of that of air, is difficult to dissolve in water, does not support combustion and can not maintain breath, and when the gas reaches a certain concentration, people can suffocate due to oxygen deficiency and can be burnt or exploded. Gas is one of the important factors influencing coal mine safety all the time, and especially, serious gas explosion accidents which occur nationwide in recent years are continuous, so that huge losses are caused to the life safety of people and national property. Effective measures must be taken to reduce the gas concentration in the roadway and the working face.

At present, in coal mining operation, a ventilation mode is usually adopted for a mine, and gas is discharged out of the mine so as to dilute and reduce the concentration of the gas. However, when the content of the gas accumulated on the working face is high, the gas is discharged only by a ventilation mode, technical difficulties exist, if the ventilation is not timely, when the gas concentration is high to a certain degree, gas accidents easily occur, and casualties and property losses are caused. Meanwhile, the existing gas purification device mostly adopts absorption liquid to absorb gas, and then the absorption liquid is conveyed to a specific place to separate out the gas, so that the process of the mode is complicated, the time consumption is long, and the coal mining progress is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a colliery is gas purifier in pit to solve the problem that above-mentioned background art provided.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a colliery is gas purifier in pit, including absorption bucket and analysis case, the double-phase opposite side of absorption bucket inner wall all is fixed with the baffling board that staggers and interval set up, the top of absorption bucket is fixed with the pump, the gas tube of pump passes the baffling board and stretches into the interior bottom of absorption bucket, a side intercommunication of absorption bucket has the outlet duct, the top of absorption bucket and the one side that is equipped with the outlet duct are fixed with the gas tester; one side surface of the precipitation box is communicated with a delivery pump, a flow inlet pipe of the delivery pump extends into the inner bottom of the absorption barrel, and an electromagnetic valve is arranged on the flow inlet pipe; an exhaust pump and a reflux pump are fixed at the top of the precipitation tank, an air inlet pipe of the exhaust pump and an inflow pipe of the reflux pump respectively extend into the inner top and the inner bottom of the precipitation tank, one side surface of the reflux pump is communicated with the inner top of the absorption barrel through a reflux pipe, and a valve is arranged on the reflux pipe; the absorption barrel is filled with organic solution, gas in the underground air is extracted through the organic solution, the gas is absorbed through the organic solution, when the absorption reaches saturation, the gas is discharged from the gas outlet pipe, at the moment, the gas tester displays that the gas is discharged, the inflator pump is turned off, and the air is stopped from being filled into the absorption barrel; then starting a delivery pump, opening an electromagnetic valve, pumping the organic solution which is saturated in absorption into an extraction box, closing the delivery pump, the electromagnetic valve and the valve after the organic solution is extracted, starting an exhaust pump, pumping air in the extraction box through the exhaust pump to cause a negative pressure state, and forcing the gas in the organic solution to be extracted to obtain pure gas; then, refluxing the organic solution after gas separation into an absorption barrel through a reflux pump for next gas absorption and purification; the method has the advantages of simple process, convenient operation and short time consumption, and can treat the underground air at any time, thereby improving the safety of the underground coal mine.

Furthermore, a probe of the gas detector extends into the inner top of the absorption barrel, and the bottom end face of the probe and the axis of the gas outlet pipe are positioned on the same horizontal plane; and monitoring whether the absorption of the organic solution in the absorption barrel to the gas is saturated or not by using a gas tester.

Furthermore, a gas collector is fixed on the top end face of the precipitation box and the other side face provided with the reflux pump, and an exhaust pipe of the exhaust pump is communicated with one side face of the top of the gas collector; the gas collector is used for collecting and storing gas, so that the gas is prevented from returning to the underground, and the underground safety of a coal mine is prevented from being influenced.

Furthermore, one end of the return pipe extends into the absorption barrel and is coaxial with the air outlet pipe.

Furthermore, the other side surface of the conveying pump communicated with the inflow pipe is fixedly connected with one side surface of the precipitation box.

The utility model discloses following beneficial effect has:

1. the utility model is provided with the absorption barrel, the underground air passes through the inner bottom of the absorption barrel through the inflation tube in the absorption barrel, and the gas is gradually absorbed by the organic solution during the gradual upward floating of the air in the absorption barrel; then negative pressure is generated by the exhaust pump to force the gas to be separated out from the organic solution, so that the gas is purified, the process is simple, the operation is convenient, and the underground gas purification efficiency is improved;

2. the utility model has the advantages that the baffle plate is arranged, when the underground air is introduced into the bottom of the absorption barrel through the inflation tube, the air can gradually float upwards due to pressure, and when the baffle plate is arranged in a staggered manner, the baffle plate prolongs the retention time of the air in the absorption barrel, and improves the absorption effect of organic solution in the absorption barrel on gas; further reducing the content of underground gas.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a coal mine underground gas purification device of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a partial cross-sectional view of the absorption tank and the precipitation tank;

FIG. 4 is a cross-sectional view of an absorption tank;

in the drawings, the components represented by the respective reference numerals are listed below:

1-absorption barrel, 2-precipitation box, 3-baffle plate, 4-inflator pump, 5-air outlet pipe, 6-delivery pump, 7-exhaust pump, 8-reflux pump, 9-inflow pipe, 10-reflux pipe, 11-electromagnetic valve, 12-gas tester, 13-gas collector and 14-inflator pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the utility model relates to a coal mine underground gas purification device, which comprises an absorption barrel 1 and a precipitation box 2, wherein two opposite side surfaces of the inner wall of the absorption barrel 1 are respectively fixed with baffle plates 3 which are staggered and arranged at intervals, the top end of the absorption barrel 1 is fixed with an inflator pump 4, an inflation tube 14 of the inflator pump 4 passes through the baffle plates 3 and extends into the inner bottom of the absorption barrel 1, one side surface of the absorption barrel 1 is communicated with an air outlet pipe 5, and one side of the top of the absorption barrel 1, which is provided with the air outlet pipe 5, is fixed with a gas detector 12; one side surface of the precipitation box 2 is communicated with a delivery pump 6, a flow inlet pipe of the delivery pump 6 extends into the inner bottom of the absorption barrel 1, and an electromagnetic valve 11 is arranged on the flow inlet pipe; an exhaust pump 7 and a reflux pump 8 are fixed at the top of the precipitation tank 2, an air inlet pipe of the exhaust pump 7 and an inflow pipe 9 of the reflux pump 8 extend into the inner top and the inner bottom of the precipitation tank 2 respectively, one side surface of the reflux pump 8 is communicated with the inner top of the absorption barrel 1 through a reflux pipe 10, and a valve is arranged on the reflux pipe 10.

The absorption barrel 1 is filled with organic solution, the main component of gas in the underground air is extracted by the organic solution, the methane is insoluble in water and soluble in the organic solution, the gas is absorbed by the organic solution, the gas is discharged from the gas outlet pipe 5 after the absorption reaches saturation, at the moment, the gas tester 12 displays that the gas is discharged, the inflator pump 4 is turned off, and the air is stopped from being filled into the absorption barrel 1; then starting the delivery pump 6, opening the electromagnetic valve 11, pumping the organic solution which is saturated in absorption into the precipitation tank 2, closing the delivery pump 6, the electromagnetic valve 11 and the valve after the organic solution is pumped out, starting the exhaust pump 7, pumping the air in the precipitation tank 2 through the exhaust pump 7 to cause a negative pressure state, and forcing the gas in the organic solution to be precipitated to obtain pure gas; then, the organic solution after gas separation is refluxed into the absorption barrel 1 through a reflux pump 8 for next gas absorption and purification; the method has the advantages of simple process, convenient operation and short time consumption, and can treat the underground air at any time, thereby improving the safety of the underground coal mine.

Wherein, the probe of the gas measuring instrument 12 extends into the inner top of the absorption barrel 1, and the bottom end surface of the probe and the axis of the gas outlet pipe 5 are positioned at the same horizontal plane; the gas meter 12 monitors whether or not the organic solution in the absorption vessel 1 is saturated in absorbing the gas.

Wherein, a gas collector 13 is fixed on the top end surface of the precipitation box 2 and the other side surface provided with the reflux pump 8, and an exhaust pipe of the exhaust pump 7 is communicated with one side surface of the top of the gas collector 13; the gas collector 13 is used for collecting and storing gas, so that the gas is prevented from returning to the underground, and the underground safety of a coal mine is prevented from being influenced.

Wherein, one end of the return pipe 10 extending into the absorption barrel 1 is coaxial with the air outlet pipe 5.

Wherein, the other side surface of the delivery pump 6 communicated with the inflow pipe is fixedly connected with one side surface of the precipitation box 2.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a colliery is gas purifier in pit, includes absorption bucket (1) and separates out case (2), its characterized in that: baffle plates (3) which are staggered and arranged at intervals are fixed on two opposite side surfaces of the inner wall of the absorption barrel (1), an inflator pump (4) is fixed at the top end of the absorption barrel (1), an inflation pipe (14) of the inflator pump (4) penetrates through the baffle plates (3) and extends into the inner bottom of the absorption barrel (1), and an air outlet pipe (5) is communicated with one side surface of the absorption barrel (1);

a delivery pump (6) is communicated with one side surface of the precipitation box (2), a flow inlet pipe of the delivery pump (6) extends into the inner bottom of the absorption barrel (1), and an electromagnetic valve (11) is arranged on the flow inlet pipe;

the top of analysing case (2) is fixed with air pump (7) and backwash pump (8), the intake pipe of air pump (7) and inflow pipe (9) of backwash pump (8) stretch into the interior top and the interior bottom of analysing case (2) respectively, the interior top intercommunication of back flow (10) and absorption bucket (1) is passed through to the side of backwash pump (8), be equipped with the valve on back flow (10).

2. The coal mine underground gas purification device according to claim 1, wherein a gas tester (12) is fixed at the top of the absorption barrel (1) and at one side of the gas outlet pipe (5), a probe of the gas tester (12) extends into the inner top of the absorption barrel (1), and the bottom end surface of the probe and the axis of the gas outlet pipe (5) are in the same horizontal plane.

3. The coal mine underground gas purification device as claimed in claim 1, wherein a gas collector (13) is fixed on the top end face of the precipitation box (2) and the other side face provided with the reflux pump (8), and an exhaust pipe of the exhaust pump (7) is communicated with one side face of the top of the gas collector (13).

4. The coal mine underground gas purification device as claimed in claim 1, wherein one end of the return pipe (10) extending into the absorption barrel (1) is coaxial with the gas outlet pipe (5).

5. The coal mine underground gas purification device as claimed in claim 1, wherein the other side surface of the conveying pump (6) communicated with the inflow pipe is fixedly connected with one side surface of the precipitation box (2).